HK1029181A1 - Surface pattern - Google Patents

Surface pattern

Info

Publication number
HK1029181A1
HK1029181A1 HK00108486A HK00108486A HK1029181A1 HK 1029181 A1 HK1029181 A1 HK 1029181A1 HK 00108486 A HK00108486 A HK 00108486A HK 00108486 A HK00108486 A HK 00108486A HK 1029181 A1 HK1029181 A1 HK 1029181A1
Authority
HK
Hong Kong
Prior art keywords
divided
elements
portions
surface portions
value
Prior art date
Application number
HK00108486A
Inventor
Rene Staub
Wayne Robert Tompkin
Original Assignee
Ovd Kinegram Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ovd Kinegram Ag filed Critical Ovd Kinegram Ag
Publication of HK1029181A1 publication Critical patent/HK1029181A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Credit Cards Or The Like (AREA)
  • Liquid Crystal (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Materials For Medical Uses (AREA)

Abstract

A surface pattern is made up of surface elements (1 to 7) which are arranged in a mosaic-like fashion and which have microscopic relief structures. The surface elements (2 to 6) which are divided at least into first and second surface portions (8; 9) have in the first and second surface portions (8; 9) asymmetrical diffraction gratings (12; 13) with an optical diffraction effect, wherein in each divided surface element (2 to 6) adjacent first surface portions (8) are separated by at least one second surface portion (9). The grating vectors of the asymmetrical diffraction gratings (12) of the first surface portions (8) of all divided surface elements (2 to 6) have the same first value in respect of azimuth and the asymmetrical diffraction gratings (13) of the second surface portions (9) of all divided surface elements (2 to 6) have the same second value in respect of azimuth. The divided surface elements (2 to 6) are arranged in accordance with their surface proportion value AN in the mosaic of all surface elements (1 to 7). The surface proportion value AN of the N-th divided surface element is the relationship of the sum of all first surface portions (8) to the total area of all first and second surface portions (8; 9).
HK00108486A 1998-01-27 2000-12-28 Surface pattern HK1029181A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00190/98A CH693427A5 (en) 1998-01-27 1998-01-27 Surface pattern.
PCT/EP1998/008492 WO1999038038A1 (en) 1998-01-27 1998-12-29 Surface pattern

Publications (1)

Publication Number Publication Date
HK1029181A1 true HK1029181A1 (en) 2001-03-23

Family

ID=4181308

Family Applications (1)

Application Number Title Priority Date Filing Date
HK00108486A HK1029181A1 (en) 1998-01-27 2000-12-28 Surface pattern

Country Status (10)

Country Link
US (1) US6417968B1 (en)
EP (1) EP1051647B1 (en)
AT (1) ATE236410T1 (en)
AU (1) AU745327B2 (en)
CA (1) CA2319139C (en)
CH (1) CH693427A5 (en)
DE (1) DE59807777D1 (en)
ES (1) ES2196651T3 (en)
HK (1) HK1029181A1 (en)
WO (1) WO1999038038A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6608919B1 (en) * 1999-11-10 2003-08-19 Digimarc Corporation Method and apparatus for encoding paper with information
CN1265216C (en) 2000-04-15 2006-07-19 Ovd基尼格拉姆股份公司 Pattern
DE10127981C1 (en) * 2001-06-08 2003-01-16 Ovd Kinegram Ag Zug Diffractive security element
DE10129938B4 (en) * 2001-06-20 2005-05-25 Ovd Kinegram Ag As an authenticity feature on a document arranged optically variable surface pattern
DE10216562C1 (en) 2002-04-05 2003-12-11 Ovd Kinegram Ag Zug Security element with micro and macro structures
DE10216563B4 (en) * 2002-04-05 2016-08-04 Ovd Kinegram Ag Security element as photocopy protection
DE10237059A1 (en) 2002-08-09 2004-02-26 Giesecke & Devrient Gmbh Valuable data support, e.g. a banknote, has half-tone illustrations or motifs to prevent copying, the grid lines of which have widths that vary on only one side only to improve copying protection
DE10328759B4 (en) * 2003-06-25 2006-11-30 Ovd Kinegram Ag Optical security element and system for visualizing hidden information
DE10333469A1 (en) 2003-07-22 2005-02-10 Giesecke & Devrient Gmbh security element
DE10334310A1 (en) * 2003-07-28 2005-02-24 Giesecke & Devrient Gmbh Security paper for the production of value documents
DE10351129B4 (en) 2003-11-03 2008-12-24 Ovd Kinegram Ag Diffractive security element with a halftone image
US7367759B2 (en) * 2004-12-07 2008-05-06 A.M. Precision Machining, Inc. Surface relief grating image machining process and product
DE102005061749A1 (en) * 2005-12-21 2007-07-05 Giesecke & Devrient Gmbh Optically variable security element for making valuable objects safe has an achromatic reflecting micro-structure taking the form of a mosaic made from achromatic reflecting mosaic elements
DE102006016139A1 (en) * 2006-04-06 2007-10-18 Ovd Kinegram Ag Multi-layer body with volume hologram
US8133638B2 (en) * 2006-05-30 2012-03-13 Brady Worldwide, Inc. All-polymer grating microstructure
WO2011008216A1 (en) 2009-07-17 2011-01-20 Hewlett-Packard Development Company, L.P. Non-periodic grating reflectors with focusing power and methods for fabricatting the same
EP2480917A4 (en) 2009-09-23 2013-05-29 Hewlett Packard Development Co Optical devices based on diffraction gratings
US8952403B2 (en) 2010-01-29 2015-02-10 Hewlett-Packard Development, L.P. Optical devices based on non-periodic sub-wavelength gratings
EA017829B1 (en) * 2011-09-26 2013-03-29 Общество С Ограниченной Ответственностью "Центр Компьютерной Голографии" Microoptic system for visual control of product authenticity
EA018164B1 (en) * 2011-09-26 2013-05-30 Общество С Ограниченной Ответственностью "Центр Компьютерной Голографии" Micro-optical system for forming images for visual control of product identity
CN105842767B (en) * 2016-05-04 2018-05-01 上海大学 The device and method of diffraction optical element are prepared using micro- pattern electrode thermal poling

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515459A (en) * 1967-01-03 1970-06-02 Remsen V Wood Inlay diffraction gratings
US4414784A (en) * 1981-02-02 1983-11-15 Masters Richard M Greenhouse structure
CH659433A5 (en) 1982-10-04 1987-01-30 Landis & Gyr Ag DOCUMENT WITH A REFLECTIVE OPTICAL SECURITY ELEMENT.
CH662989A5 (en) * 1983-11-16 1987-11-13 De La Rue Giori Sa VALUE PAPER.
EP0201323B1 (en) 1985-05-07 1994-08-17 Dai Nippon Insatsu Kabushiki Kaisha Article incorporating a transparent hologramm
ATE98795T1 (en) 1988-09-30 1994-01-15 Landis & Gyr Business Support DIFFRACTION ELEMENT.
DE58909370D1 (en) * 1988-09-30 1995-09-07 Landis & Gry Tech Innovat Ag Bar code field and bar code reader.
EP0375833B1 (en) 1988-12-12 1993-02-10 Landis & Gyr Technology Innovation AG Optically variable planar pattern
ES2073465T3 (en) 1989-06-05 1995-08-16 Landis & Gyr Betriebs Ag STRATIFIED WITH OPTICAL DIFFERATION STRUCTURES.
CA2060057C (en) * 1991-01-29 1997-12-16 Susumu Takahashi Display having diffraction grating pattern
DE59204591D1 (en) * 1991-10-14 1996-01-18 Landis & Gyr Tech Innovat Security element.
DE59409779D1 (en) * 1993-04-16 2001-07-19 Infineon Technologies Ag Diffractive optical device for the optical imaging of a spatial point on other spatial points
DE69428700T2 (en) * 1993-05-25 2002-08-01 Commonwealth Scientific And Industrial Research Organisation, Campbell DIFFERENTIAL DEVICE WITH SEVERAL IMAGES
US5784200A (en) * 1993-05-27 1998-07-21 Dai Nippon Printing Co., Ltd. Difraction grating recording medium, and method and apparatus for preparing the same
US5750946A (en) * 1995-11-30 1998-05-12 Otis Elevator Company Estimation of lobby traffic and traffic rate using fuzzy logic to control elevator dispatching for single source traffic
US5920380A (en) * 1997-12-19 1999-07-06 Sandia Corporation Apparatus and method for generating partially coherent illumination for photolithography

Also Published As

Publication number Publication date
EP1051647B1 (en) 2003-04-02
CA2319139C (en) 2004-02-24
ATE236410T1 (en) 2003-04-15
CA2319139A1 (en) 1999-07-29
EP1051647A1 (en) 2000-11-15
US6417968B1 (en) 2002-07-09
AU745327B2 (en) 2002-03-21
AU2276699A (en) 1999-08-09
WO1999038038A1 (en) 1999-07-29
DE59807777D1 (en) 2003-05-08
ES2196651T3 (en) 2003-12-16
CH693427A5 (en) 2003-07-31

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20061229